Grade 10 Chemical Measurements Worksheet
This worksheet covers fundamental concepts in chemical measurements for Grade 10 science students, including atomic mass, molar mass, and stoichiometry.
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Grade 10 Chemical Measurements
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Read each question carefully and answer to the best of your ability. Show all your work for calculations.
1. What is the SI unit for the amount of substance?
gram
mole
liter
kilogram
2. What is the molar mass of H₂O? (Atomic mass: H = 1.008 g/mol, O = 15.999 g/mol)
17.007 g/mol
18.015 g/mol
1.008 g/mol
15.999 g/mol
3. Avogadro's number is approximately particles per mole.
4. The atomic mass of an element is the weighted average mass of its .
5. Explain the difference between atomic mass and molar mass.
6. How many moles are in 50.0 grams of CaCO₃? (Atomic mass: Ca = 40.078 g/mol, C = 12.011 g/mol, O = 15.999 g/mol)
7. A triple beam balance is used to measure the volume of a liquid.
True
False
8. One mole of any substance contains the same number of particles.
True
False
Match each term on the left with its definition on the right.
9. Mole
a. The mass in grams of one mole of a substance.
10. Molar Mass
b. The number of atoms in exactly 12 grams of carbon-12.
11. Avogadro's Number
c. SI unit for the amount of substance.